Free OnlineTools

Format, minify and validate JSON

Encode and decode Base64 text

Encode and decode URL components

Convert text case in batch

Test regular expressions with instant matches

Count characters, words, lines and paragraphs

Generate placeholder text quickly

Encode and decode HTML entities

Clean extra spaces, blank lines, and line breaks in bulk

Convert text into URL-friendly slugs

Sort, deduplicate and reverse text lines

Compare differences between two texts

Compare two texts line by line

Remove duplicate lines from text

Extract links from pasted text in bulk

Estimate reading and speaking time from text length

Replace text in bulk with keywords or regular expressions

Generate MD5/SHA hashes

Encode and decode Base64 text

Decode JWT header and payload

Encode and decode URL components

Generate UUID v4 in batches

Generate secure random passwords

Lookup A/AAAA/CNAME/MX/NS/TXT records

Inspect certificate subject, issuer and expiry

Run connectivity tests with ping

Look up IP geolocation and ISP info

Format JSON, HTML, CSS and JavaScript

Convert Unix timestamps and datetime

Convert CSV text into JSON array

Parse and build URL query strings

Convert JSON array into CSV text

Convert length, weight and temperature units

Convert between CSV and JSON formats

Convert between JSON and YAML formats

Calculate common percentage scenarios quickly

Generate random numbers within a range

Calculate BMI using height and weight

Convert between binary, octal, decimal and hex

Parse cron expressions to human-readable text

Evaluate JSONPath expressions on JSON data

Generate HTML meta tag code for SEO

Generate robots.txt content visually

Calculate age, total days, and next birthday from a birth date

Calculate monthly payments, total interest, and early amortization rows

Convert between Excel column numbers and labels

Convert octal and symbolic file permissions

Convert B, KB, MB, GB, TB, and PB units

Compress images directly in browser

Preview rendered Markdown in real time

Generate QR codes from text or links

Resize images by custom width and height

Convert images to Base64 Data URL

Generate linear-gradient CSS visually

Calculate and lock aspect ratios

Preview HTML rendering in real time

Generate CSS box-shadow visually

Search and copy popular emojis

Look up Unicode character code info

Generate placeholder images with Canvas

Generate color schemes from a base color

Check whether text and background colors meet WCAG contrast requirements

Convert HEX, RGB and HSL colors

Convert CSV text into JSON array

Convert JSON array into CSV text

Convert between CSV and JSON formats

Convert between JSON and YAML formats

Convert between XML and JSON data

Convert between TSV and JSON formats

Generate TypeScript types from JSON samples